结果表明，提高进气温度有利于减少冷起动阶段的HC、CO排放。
The testing results showed that increasing the intake temperature was favorable to the decrease of HC and CO emissions.
发动机在冷起动阶段由于空气温度低、燃油雾化不好、催化剂未能达到起燃温度，因而hc和CO污染严重。
In the cold starting phase, because of the lower air temperature, the worse fuel atomization, and the catalyst temperature being below initiation temperature, HC and co emissions are high.
经系统调试和试车同步验证，证明该检测系统能有效检测发动机起动阶段故障，对提高试车可靠性和安全性有重要意义。
This detection system was verified to be effective through debugging and engine hot testing. This system is important to engine reliability and safety improvement.
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